[INFO] fetching crate frunk 0.4.4...
[INFO] checking frunk-0.4.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate frunk 0.4.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate frunk 0.4.4
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate frunk 0.4.4
[INFO] tweaked toml for crates.io crate frunk 0.4.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate frunk 0.4.4 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate frunk 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 987013146e952af5c5371b4e001c0049a532f06d9eda64a68f6f3953aa685025
[INFO] running `Command { std: "docker" "start" "-a" "987013146e952af5c5371b4e001c0049a532f06d9eda64a68f6f3953aa685025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "987013146e952af5c5371b4e001c0049a532f06d9eda64a68f6f3953aa685025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "987013146e952af5c5371b4e001c0049a532f06d9eda64a68f6f3953aa685025", kill_on_drop: false }`
[INFO] [stdout] 987013146e952af5c5371b4e001c0049a532f06d9eda64a68f6f3953aa685025
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d4146baf09fe14781dcbafa137ef60fd4d298899624327bfbbc3643e8b980b2
[INFO] running `Command { std: "docker" "start" "-a" "9d4146baf09fe14781dcbafa137ef60fd4d298899624327bfbbc3643e8b980b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling frunk_core v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.4
[INFO] [stderr]    Compiling frunk_derives v0.4.4
[INFO] [stderr]    Compiling frunk_proc_macros v0.1.4
[INFO] [stderr]     Checking frunk v0.4.3
[INFO] [stderr]     Checking frunk v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking frunk_laws v0.5.2
[INFO] [stdout] warning: unused import: `frunk_core::hlist`
[INFO] [stdout]  --> benches/hlist.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use frunk_core::hlist::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> benches/validated.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> tests/common/mod.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Person<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Strategist` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Strategist<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `President` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct President<'a> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TupleStruct` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct TupleStruct<'a>(pub &'a str, pub i32);
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Strategist` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Strategist<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `President` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct President<'a> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TupleStruct` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct TupleStruct<'a>(pub &'a str, pub i32);
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Coproduct<Field<(frunk::labelled::chars::V, frunk::labelled::chars::a, frunk::labelled::chars::r, frunk::labelled::chars::i, frunk::labelled::chars::a, frunk::labelled::chars::n, frunk::labelled::chars::t, frunk::labelled::chars::A), HNil>, Coproduct<Field<(frunk::labelled::chars::V, frunk::labelled::chars::a, frunk::labelled::chars::r, frunk::labelled::chars::i, frunk::labelled::chars::a, frunk::labelled::chars::n, frunk::labelled::chars::t, frunk::labelled::chars::C), HCons<Field<frunk::labelled::chars::x, String>, HCons<Field<frunk::labelled::chars::y, bool>, HNil>>>, Coproduct<Field<(frunk::labelled::chars::V, frunk::labelled::chars::a, frunk::labelled::chars::r, frunk::labelled::chars::i, frunk::labelled::chars::a, frunk::labelled::chars::n, frunk::labelled::chars::t, frunk::labelled::chars::B), HCons<Field<(frunk::labelled::chars::__, frunk::labelled::chars::_0), i32>, HNil>>, CNil>>>, CNil>
[INFO] [stdout]    --> tests/labelled_tests.rs:249:22
[INFO] [stdout]     |
[INFO] [stdout] 249 |     let repr = match into_labelled_generic(value).subset() {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frunk` (test "labelled_tests") due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9d4146baf09fe14781dcbafa137ef60fd4d298899624327bfbbc3643e8b980b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d4146baf09fe14781dcbafa137ef60fd4d298899624327bfbbc3643e8b980b2", kill_on_drop: false }`
[INFO] [stdout] 9d4146baf09fe14781dcbafa137ef60fd4d298899624327bfbbc3643e8b980b2